You should think about things the way Christ Jesus did.

He existed in the form of God [i.e., He shared God's very nature], but did not consider [remaining] equal with God something [to continue] to hold onto.

Watch out for the "dogs!" [Note: "Dogs" were viewed with disgust by the ancient Jews (Deut. 23:18; II Kings 8:13; Rev. 22:15), so the term is used here derogatorily for Jewish Christians who were trying to impose on the church the requirements of the law of Moses]. Watch out for the evil workers! Watch out for those who mutilate the body meaninglessly! [Note: Paul here alludes, in a derogatory wordplay, to the Jewish practice of circumcision].

in order to, somehow, be raised out of the dead [i.e., to have never ending life].