'Dealest' in the Bible

Then the officers of the children of Israel came and cried unto Pharaoh, saying, Wherefore dealest thou thus with thy servants?

Bring my soul out of prison, that I may celebrate thy name. The righteous shall surround me, because thou dealest bountifully with me.

Woe to thee that spoilest, and thou wast not spoiled; and dealest treacherously, and they dealt not treacherously with thee! when thou shalt cease to spoil, thou shalt be spoiled; and when thou shalt make an end to deal treacherously, they shall deal treacherously with thee.

Yea, thou hast not heard, Yea, thou hast not known, Yea, from that time not opened hath thine ear, For I have known thou dealest treacherously, And 'Transgressor from the belly,' One is crying to thee.