He sent the Holy Spirit to the Magisterium (apostles/bishops) of Christ's one historic Church to guide it into all truth (Mt. 28:18-20; Lk. 10:16; Ac. 15:2; 16:4; Eph. 3:5, 10; 2 Thess. 3:4; 1 Tim. 3:15; 1 Jn. 4:6). If we laymen want the fullness of the truth, we must turn to the authoritative teachings of the Church.
The Catholic Church, however, is in fact that one historic Church founded by Jesus Christ himself---no mere man.
Gaudium de veritate,
Cruciform
+T+
Not according to Jesus.
John 7:37 In the last day, that great day of the feast, Jesus stood and cried, saying, If any man thirst, let him come unto me, and drink.
38 He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
39 (But this spake he of the Spirit, which they that believe on him should receive: for the Holy Ghost was not yet given; because that Jesus was not yet glorified.)
Jesus never said salvation was in a church, neither did the Apostles, never.
Acts 16:29 Then he called for a light, and sprang in, and came trembling, and fell down before Paul and Silas,
30 And brought them out, and said, Sirs, what must I do to be saved?
31 And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house.
everready