Proverbs 16:
The Father praised the Son in Matthew 3:
Is being proud sinful?
No, when you are thankful and acknowledge God for it. Yes, otherwise.
Pride in the sense of haughtiness is a sin, 1 John 2:18 Pride goes before destruction, and a haughty spirit before a fall.
Proverbs 8:16 the lust of the flesh, the lust of the eyes, and the sinful pride of life
In English, there is a difference between "proud" and "prideful". "Prideful" is negative; "proud" could be positive. A parent can be proud of his kids without being arrogant. A person may be proud of his achievement after a long struggle.13 I hate pride and arrogance, evil behavior and perverse speech.
The Father praised the Son in Matthew 3:
A master praised his servant in Matthew 25:17 a voice from heaven said, “This is my Son, whom I love; with him I am well pleased.”
Corinthians boasting about themselves was bad, 1 Corinthians 5:623 His master replied, ‘Well done, good and faithful servant! You have been faithful with a few things; I will put you in charge of many things. Come and share your master’s happiness!’
But then, Paul boasted about the Corinthian congregation in 2 Corinthians 7:Your boasting is not good. Do you not know that a little leaven works through the whole batch of dough?
Paul likened confidence with good boasting.4 Great is my confidence in you; great is my boasting on your behalf. I am filled with comfort; I am overflowing with joy in all our affliction.
Is being proud sinful?
No, when you are thankful and acknowledge God for it. Yes, otherwise.