He that loveth not - As already described, knoweth not God - has no experimental knowledge of him.

God is love - An infinite fountain of benevolence and beneficence to every human being. He hates no thing that he has made. He cannot hate, because he is love. He causes his sun to rise on the evil and the good, and sends his rain on the just and the unjust. He has made no human being for perdition, nor ever rendered it impossible, by any necessitating decree, for any fallen soul to find mercy. He has given the fullest proof of his love to the whole human race by the incarnation of his Son, who tasted death for every man. How can a decree of absolute, unconditional reprobation, of the greater part or any part of the human race, stand in the presence of such a text as this? It has been well observed that, although God is holy, just, righteous, etc., he is never called holiness, justice, etc., in the abstract, as he is here called Love. This seems to be the essence of the Divine nature, and all other attributes to be only modifications of this.

knoweth.

1 John 2:4,9 He that said, I know him, and keeps not his commandments, is a liar, and the truth is not in him...

1 John 3:6 Whoever stays in him sins not: whoever sins has not seen him, neither known him.

John 8:54,55 Jesus answered, If I honor myself, my honor is nothing: it is my Father that honors me; of whom you say, that he is your God...

God is.

1 John 1:5 This then is the message which we have heard of him, and declare to you, that God is light, and in him is no darkness at all.

Exodus 34:6,7 And the LORD passed by before him, and proclaimed, The LORD, The LORD God, merciful and gracious, long-suffering...

Psalm 86:5,15 For you, Lord, are good, and ready to forgive; and plenteous in mercy to all them that call on you...

2 Corinthians 13:11 Finally, brothers, farewell. Be perfect, be of good comfort, be of one mind, live in peace...

Ephesians 2:4 But God, who is rich in mercy, for his great love with which he loved us,

Hebrews 12:29 For our God is a consuming fire.

The Servant as his Lord
'... As He is, so are we in this world.'--1 John iv. 17. Large truths may be spoken in little words. Profundity is often supposed to be obscurity, but the deepest depth is clear. John, in his gospel and epistles, deals with the deepest realities, and with all things in their eternal aspects, but his vocabulary is the simplest in the New Testament. God and the world, life and death, love and hate, light and darkness, these are the favourite words round which his thoughts gather. Here are nine little …
Alexander Maclaren—Expositions of Holy Scripture Ephesians, Peter,John

"And if Christ be in You, the Body is Dead Because of Sin; but the Spirit is Life Because of Righteousness. "
Rom. viii. 10.--"And if Christ be in you, the body is dead because of sin; but the Spirit is life because of righteousness." God's presence is his working. His presence in a soul by his Spirit is his working in such a soul in some special manner, not common to all men, but peculiar to them whom he hath chosen. Now his dwelling is nothing else but a continued, familiar and endless working in a soul, till he hath conformed all within to the image of his Son. The soul is the office house, or workhouse, …
Hugh Binning—The Works of the Rev. Hugh Binning

"For what the Law could not Do, in that it was Weak Though the Flesh, God Sending his Own Son,"
Rom. viii. 3.--"For what the law could not do, in that it was weak though the flesh, God sending his own Son," &c. Of all the works of God towards man, certainly there is none hath so much wonder in it, as the sending of his Son to become man; and so it requires the exactest attention in us. Let us gather our spirits to consider of this mystery,--not to pry into the secrets of it curiously, as if we had no more to do but to satisfy our understandings; but rather that we may see what this concerns …
Hugh Binning—The Works of the Rev. Hugh Binning