must.

2 Corinthians 11:16-18
I repeat: Let no one take me for a fool. But if you do, then receive me as a fool, so that I too may boast a little. . . .

2 Corinthians 12:1, 11
I must go on boasting. Although there is nothing to gain, I will go on to visions and revelations from the Lord. . . .

Proverbs 25:27
It is not good to eat too much honey or to search out one's own glory.

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

Jeremiah 9:23, 24
This is what the LORD says: "Let not the wise man boast in his wisdom, nor the strong man in his strength, nor the wealthy man in his riches. . . .

I will.

2 Corinthians 12:5-10
I will boast about such a man, but I will not boast about myself, except in my weaknesses. . . .

Colossians 1:24
Now I rejoice in my sufferings for you, and I fill up in my flesh what is lacking in regard to Christ's afflictions for the sake of His body, which is the church.