A. We should avoid proud boasting:

1SA 2:3. Talk no more so exceeding proudly; let not arrogancy come out of your mouth: for the LORD is a God of knowledge, and by him actions are weighed.

PRO 27:2. Let another man praise thee, and not thine own mouth; a stranger, and not thine own lips.

2COR 10:18. For not he that commendeth himself is approved, but whom the Lord commendeth.

B. We shouldn't exalt ourselves:

PRO 25:6. Put not forth thyself in the presence of the king, and stand not in the place of great men:

PRO 25:7. For better it is that it be said unto thee, Come up hither; than that thou shouldest be put lower in the presence of the prince whom thine eyes have seen.

LUK 14:10. But when thou art bidden, go and sit down in the lowest room; that when he that bade thee cometh, he may say unto thee, Friend, go up higher: then shalt thou have worship in the presence of them that sit at meat with thee.

C. If we're proud we're in a dangerous position:

PSA 18:27. For thou wilt save the afflicted people; but wilt bring down high looks.

PRO 15:25. The LORD will destroy the house of the proud: but he will establish the border of the widow.

ECC 7:16. Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself ?

JER 48:25. The horn of Moab is cut off, and his arm is broken, saith the LORD.

JER 48:26. Make ye him drunken: for he magnified himself against the LORD: Moab also shall wallow in his vomit, and he also shall be in derision.