'O God' in the Bible

having been full of qualities of righteousness, which come from Jesus Christ and produce honor and praise to God.

He humbled Himself [by] becoming obedient [to God] to the point of death, even death on a cross.

But even if I am poured out like a drink offering [See Ex. 29:38-41] on the sacrifice and service produced by your faith, I am glad and will rejoice with all of you. [Note: Paul here likens the possible pouring out of his blood to the wine and oil of the Old Testament sacrifice, which is then likened to the Philippians' faithful service to God].

Do not worry about anything, but in everything, by prayer and [special] petition, along with thanksgivings, you should make your requests known to God.

But I have everything [I need], and in abundance; I am fully supplied, having received from Epaphroditus the gifts that you sent, [which are like] a fragrant-smelling sacrifice, acceptable and very pleasing to God.