The Greek word used for “servant” is the word doulos, which literally means, “bond-servant.” It’s not a hired servant, someone who serves because that’s their job. The Hebrew word is ebed, and is likewise translated as ‘bond servant’, meaning “one who is subservient to, and entirely at the disposal of, his master; a slave.”
The Bond Servant
God has no beginning. All things originated in Him. God has never not-existed. In fact the very concept of existence or existing originated with Him. The deepest manifestation of God referenced in the Bible is in the globe of eternity. (Isa.57:15) it is there that He first becomes manifest or knowable to the intellect. Beyond and without the globe of eternity God is as nothing to all created understandings. He is simply hid, unknowable, wrapped up in unsearchable mystery.