βHowbeit when He, the Spirit of truth, is come, He will guide you into all truthβ (John 16:13).
How blessed to know that the Author of the blessed Book which has changed so many hearts and lives and homes isΒ βthe Spirit of truth.β
The Spirit did not, of course, reveal all truth at one time. βThe Law was given by Moses;β later the prophesies were penned by men of God as they were βmoved by the Holy Spiritβ and still later our Lord uttered truth βkept secret since the world began.β
But even our blessed Lord, while on earth, did not lead His followers into all the truth which God would have His people know.Β βI have yet many things to say unto you,βΒ He said,Β βbut ye cannot bear them now. Howbeit, when He, the Spirit of truth, is come, He will guide you into all truthβΒ (John 16:12,13).
But when the Spirit came at Pentecost, did He immediately lead the disciples into all truth? Not yet. They still proclaimed the prophetic program, the message which our Lord had taught them and committed to them (Luke 24: 45; Acts 1:2,3).
It was not until some time later that the glorified Lord revealed βGodβs purpose and graceβ to and through the Apostle Paul, and the Spirit in turn caused others to understand it (Gal. 2:2, 7,9; Eph. 3:1-5; II Tim. 1:9).
The glorious message revealed to Paul is the capstone of divine revelation, thus he says that it was given to him to βfulfil [complete] the Word of Godβ (Col. 1:25).
St. Paul wrote more books of the Bible than any other writer and in them we have the fulness of divine truth as God would now have us know and understand it! source