WCF 8.3.
The Lord Jesus, in His human nature thus united to the divine, was sanctified, and anointed with the Holy Spirit, above measure, (Ps. 45:7, John 3:34) having in Him all the treasures of wisdom and knowledge; (Col. 2:3) in whom it pleased the Father that all fulness should dwell; (Col. 1:19) to the end that, being holy, harmless, undefiled, and full of grace and truth, (Heb. 7:26, John 1:14) He might be thoroughly furnished to execute the office of a Mediator and Surety. (Acts 10:38, Heb. 12:24, Heb. 7:22) Which office He took not unto Himself, but was thereunto called by His Father, (Heb. 5:4–5) who put all power and judgment into His hand, and gave Him commandment to execute the same. (John 5:22, 27, Matt. 28:18, Acts 2:36)