if thou

Matthew 24:24, 25
For false Christs and false prophets will appear and perform great signs and wonders that would deceive even the elect, if that were possible. . . .

Acts 20:31
Therefore be alert and remember that for three years I never stopped warning each of you night and day with tears.

1 Corinthians 4:14
I am not writing this to shame you, but to warn you as my beloved children.

1 Corinthians 10:12
So the one who thinks he is standing firm should be careful not to fall.

Galatians 1:6-10
I am astonished how quickly you are deserting the One who called you by the grace of Christ and are turning to a different gospel-- . . .

Galatians 5:2-7
Take notice: I, Paul, tell you that if you let yourselves be circumcised, Christ will be of no value to you at all. . . .

Ephesians 4:17-21
So I tell you this, and testify to it in the Lord: You must no longer walk as the Gentiles do, in the futility of their thinking. . . .

Ephesians 5:5, 6
For of this you can be sure: No immoral, impure, or greedy person (that is, an idolater), has any inheritance in the kingdom of Christ and of God. . . .

Colossians 1:28
We proclaim Him, admonishing and teaching everyone with all wisdom, so that we may present everyone perfect in Christ.

Colossians 3:5-8
Put to death, therefore, the components of your earthly nature: sexual immorality, impurity, lust, evil desires, and greed, which is idolatry. . . .

1 Thessalonians 4:6-8
and no one should ever exploit or take advantage of his brother in this regard, because the Lord will avenge all such acts, as we have already told you and solemnly warned you. . . .

1 Thessalonians 5:14
And we urge you, brothers, to admonish the unruly, encourage the fainthearted, help the weak, and be patient with everyone.

Titus 2:15
Speak these things as you encourage and rebuke with all authority. Let no one despise you.

1 John 3:6-9
No one who remains in Him keeps on sinning. No one who continues to sin has seen Him or known Him. . . .

Revelation 3:19
Those I love, I rebuke and discipline. Therefore be earnest and repent.

he shall

Ezekiel 3:20
Now if a righteous man turns from his righteousness and commits iniquity, and I put a stumbling block before him, he will die. If you did not warn him, he will die in his sin, and the righteous acts he did will not be remembered. And I will hold you responsible for his blood.

Psalm 19:11
By them indeed Your servant is warned; in keeping them is great reward.

Proverbs 9:9
Instruct a wise man, and he will be wiser still; teach a righteous man, and he will increase his learning.

Proverbs 17:10
A rebuke affects a man of discernment more than a hundred lashes to a fool.

Galatians 2:11-13
When Cephas came to Antioch, however, I opposed him to his face, because he stood to be condemned. . . .

James 5:20
consider this: Whoever turns a sinner from the error of his way will save his soul from death and cover over a multitude of sins.

also

Ezekiel 3:19
But if you warn a wicked man and he does not turn from his wickedness and his wicked way, he will die in his iniquity, but you will have saved yourself.

1 Timothy 4:16
Pay close attention to your life and to your teaching. Persevere in these things, for by so doing you will save both yourself and those who hear you.