As many as I love - So it was the love he still had to them that induced him thus to reprehend and thus to counsel them.

Be zealous - Be in earnest, to get your souls saved, They had no zeal; this was their bane. He now stirs them up to diligence in the use of the means of grace and repentance for their past sins and remissness.

many.

Deuteronomy 8:5 You shall also consider in your heart, that, as a man chastens his son, so the LORD your God chastens you.

2 Samuel 7:14 I will be his father, and he shall be my son. If he commit iniquity, I will chasten him with the rod of men...

Job 5:17 Behold, happy is the man whom God corrects: therefore despise not you the chastening of the Almighty:

Psalm 6:1 O LORD, rebuke me not in your anger, neither chasten me in your hot displeasure.

Psalm 39:11 When you with rebukes do correct man for iniquity, you make his beauty to consume away like a moth: surely every man is vanity. Selah.

Psalm 94:10 He that chastises the heathen, shall not he correct? he that teaches man knowledge, shall not he know?

Proverbs 3:11,12 My son, despise not the chastening of the LORD; neither be weary of his correction...

Proverbs 15:10 Correction is grievous to him that forsakes the way: and he that hates reproof shall die.

Proverbs 15:32 He that refuses instruction despises his own soul: but he that hears reproof gets understanding.

Proverbs 22:15 Foolishness is bound in the heart of a child; but the rod of correction shall drive it far from him.

Isaiah 26:16 LORD, in trouble have they visited you, they poured out a prayer when your chastening was on them.

Jeremiah 2:30 In vain have I smitten your children; they received no correction: your own sword has devoured your prophets, like a destroying lion.

Jeremiah 7:28 But you shall say to them, This is a nation that obeys not the voice of the LORD their God, nor receives correction: truth is perished...

Jeremiah 10:24 O LORD, correct me, but with judgment; not in your anger, lest you bring me to nothing.

Jeremiah 30:11 For I am with you, said the LORD, to save you: though I make a full end of all nations where I have scattered you...

Jeremiah 31:18 I have surely heard Ephraim bemoaning himself thus; You have chastised me, and I was chastised, as a bullock unaccustomed to the yoke...

Zephaniah 3:2 She obeyed not the voice; she received not correction; she trusted not in the LORD; she drew not near to her God.

1 Corinthians 11:32 But when we are judged, we are chastened of the Lord, that we should not be condemned with the world.

2 Corinthians 6:9 As unknown, and yet well known; as dying, and, behold, we live; as chastened, and not killed;

Hebrews 12:5-11 And you have forgotten the exhortation which speaks to you as to children, My son, despise not you the chastening of the Lord...

James 1:12 Blessed is the man that endures temptation: for when he is tried, he shall receive the crown of life...

be.

Numbers 25:11-13 Phinehas, the son of Eleazar, the son of Aaron the priest, has turned my wrath away from the children of Israel...

Psalm 69:9 For the zeal of your house has eaten me up; and the reproaches of them that reproached you are fallen on me.

John 2:17 And his disciples remembered that it was written, The zeal of your house has eaten me up.

Romans 12:11 Not slothful in business; fervent in spirit; serving the Lord;

2 Corinthians 7:11 For behold this selfsame thing, that you sorrowed after a godly sort, what carefulness it worked in you, yes...

Galatians 4:18 But it is good to be zealously affected always in a good thing, and not only when I am present with you.

Titus 2:14 Who gave himself for us, that he might redeem us from all iniquity, and purify to himself a peculiar people, zealous of good works.

repent.

Revelation 2:5,21,22 Remember therefore from where you are fallen, and repent, and do the first works; or else I will come to you quickly...

The Loved Ones Chastened
The fact is, that this world is not the place of punishment. There may now and then be eminent judgments; but as a rule God does not in the present state fully punish any man for sin. He allows the wicked to go on in their wickedness; he throws the reins upon their necks; he lets them go on unbridled in their lusts; some checks of conscience there may be; but these are rather, as monitions than as punishments. And, on the other hand, he casts the Christian down; he gives the most afflictions to the …
Charles Haddon Spurgeon—Spurgeon's Sermons Volume 3: 1857

Inspiration.
"And unto the angel of the church in Sardis write, These things saith He that hath the seven Spirits of God."-- Rev. iii. 1. We do not speak here of the New Testament. Nothing has contributed more to falsify and undermine faith in the Scripture and the orthodox view concerning it than the unhistoric and unnatural practise of considering the Scripture of the Old and the New Testament at the same time. The Old Testament appears first; then came the Word in the flesh; and only after that the Scripture …
Abraham Kuyper—The Work of the Holy Spirit

Laodicea
We reach, in this last Epistle, the lowest point of Judah's degradation, in that long line of departure from God, from the day Israel left her "first love," even the day of her espousals, when brought forth out of Egypt, down, down through one vast scene of idolatry and judgment, until we find that nation described in the Epistle to the Assembly in Laodicea in a condition of spiritual destitution such as characterised the People in the period of the Minor Prophets. Indeed, so complete is the correspondence, …
E.W. Bullinger—Commentary on Revelation