'Thinkest' in the Bible

Thou thinkest, Lo, thou hast smitten Edom; and thy heart has lifted thee up to boast: abide now at home; why shouldest thou contend with misfortune, that thou shouldest fall, thou and Judah with thee?

Thinkest thou this to be right, that thou saidst, My righteousness is more than God's?

If thou hast run with footmen, and they have wearied thee, how wilt thou then contend with horses? And if in a land of peace thou thinkest thyself in security, how wilt thou then do in the swelling of the Jordan?