'Doest' in the Bible

Take heed to hear all these words which I command thee, that it may be well with thee, and with thy children after thee for ever, when thou doest what is good and right in the eyes of Jehovah thy God.

and the Levite for he hath no portion nor inheritance with thee and the stranger, and the fatherless, and the widow, that are within thy gates, shall come, and shall eat and be satisfied; that Jehovah thy God may bless thee in all the work of thy hand which thou doest.

Let it not seem hard unto thee, when thou sendest him away free from thee; for double the worth of a hired servant hath he been to thee, in serving thee six years; and Jehovah thy God will bless thee in all that thou doest.

Jehovah will send upon thee cursing, confusion, and rebuke, in all the business of thy hand which thou doest, until thou be destroyed and until thou perish quickly, because of the wickedness of thy doings, whereby thou hast forsaken me.