4 Bible Verses about Unquestioning Service

My meat is, to do the will of him that sent me, and to finish his work.

And he trembling and astonished, said, Lord, what wilt thou have me to do? And the Lord said to him, Arise and go into the city, and it shall be told thee what thou must do.

Then Jesus saith to him, Get thee hence, Satan; for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.

No servant can serve two masters: for either he will hate the one, and love the other, or he will cleave to the one, and despise the other. Ye cannot serve God and Mammon.