'Oneness' in the Bible

“Therefore, the one who confesses and acknowledges Me before men [as Lord and Savior, affirming a state of oneness with Me], that one I will also confess and acknowledge before My Father who is in heaven.

Make every effort to keep the oneness of the Spirit in the bond of peace [each individual working together to make the whole successful].

until we all reach oneness in the faith and in the knowledge of the Son of God, [growing spiritually] to become a mature believer, reaching to the measure of the fullness of Christ [manifesting His spiritual completeness and exercising our spiritual gifts in unity].