'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.

so that with oneness both of heart and voice you may glorify the God and Father of our Lord Jesus Christ.

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].