Q. 21. Who is the Redeemer of God’s elect?
A. The only Redeemer of God’s elect is the Lord Jesus Christ [a], who, being the eternal Son of God [b], became man [c] and so was, and continueth to be, God and man in two distinct natures, and one person, forever [d].
[a]. John 14:6; Acts 4:12; 1 Tim. 2:5-6
[b]. Ps. 2:7; Matt. 3:17; 17:5; John 1:18
[c]. Isa. 9:6; Matt. 1:23; John 1:14; Gal. 4:4
[d]. Acts 1:11; Heb. 7:24-25
Source https://www.apuritansmind.com/westminster-standards/shorter-catechism/