Boasting to Elevate Self is a Sin

God tells us not to boast in front of others because it elevates self and causes others to become envy. A wise person is not jealous, but a person without Christ will develop a sense of jealousy when others boast about themselves.

Jeremiah 9:23-24: "Let not a wise man boast of his wisdom, and let not the mighty man boast of his might, let not a rich man boast of his riches; but let him who boasts boast of this, that he understands and knows me, that I am the Lord who practices steadfast love, justice, and righteousness in the earth"

James 4:16
"As it is, you boast in your arrogance. All such boasting is evil."

Proverbs 27:2
"Let another praise you, and not your own mouth; a stranger, and not your own lips."

2 Timothy 3:1-5
"But understand this, that in the last days there will come times of difficulty. For people will be lovers of self, lovers of money, proud, arrogant, abusive, disobedient to their parents, ungrateful, unholy, heartless, unappeasable, slanderous, without self-control, brutal, not loving good, treacherous, reckless, swollen with conceit, lovers of pleasure rather than lovers of God, having the appearance of godliness, but denying its power. Avoid such people."

There is only one reason for boasting and that is to create jealousy in others and to elevate self.

2 Corinthians 11:30
"If I must boast, I will boast of the things that show my weakness."

We will never see an arrogant person divulging their flaws, in fact, they go to great lengths to pretend they have no flaws through their rage when they are confronted with wrongdoing.

Sharing our delights with a close friend is different from those who love to appear superior to others. We all love sharing our joys with those we love. It crosses the line into boasting when our motive is clearly to feel loftier than someone else. Friends do not try to be superior to one another, we share and love for others to share with us. It is a mutual reciprocity that occurs among friends, we share our heartaches as well as our joys.

The braggard never shares their heartaches or failures only their achievements that they believe will make them appear special to others.
What a wonderful thing when believers have no need to feel special or superior, their love is for others and their success in walking with Christ.