1 Timothy 3
16 And without controversy great is the mystery of godliness: God was manifested in the flesh, Justified in the Spirit, Seen by angels,
Preached among the Gentiles, Believed on in the world, Received up in glory
I said
1 Tim 3:16
16 And without controversy great is the mystery of godliness: God was manifested in the flesh, justified in the Spirit, seen by angels, preached among the Gentiles, believed on in the world, received up in glory.
(NKJ)
God was manifested(made known to us by Jesus) that God was in Christ. Justified in the Spirit because God is Spirit. Seen by angels because angels can see Him we cant. Preached among the Gentiles by Jesus and the apostles. Believed on in the world because of all the evidence. Received up in glory because He kept Jesus from sinning.
Answer
You should read these verses very carefully.
Whoever confesses that Jesus is the "Son of God" God abides in him. The Spirit gave me all these verses to help you understand the verse you posted.
I Jn 4:9-15
9 In this the love of God was manifested toward us, that God has sent His only begotten Son into the world, that we might live through Him.
10 In this is love, not that we loved God, but that He loved us and sent His Son to be the propitiation for our sins.
11 Beloved, if God so loved us, we also ought to love one another.
12 No one has seen God at any time. If we love one another, God abides in us, and His love has been perfected in us.
13 By this we know that we abide in Him, and He in us, because He has given us of His Spirit.
14 And we have seen and testify that the Father has sent the Son as Savior of the world.
15 Whoever confesses that Jesus is the Son of God, God abides in him, and he in God.
(NKJ)
2 Cor 5:18-19
18 Now all things are of God, who has reconciled us to Himself through Jesus Christ, and has given us the ministry of reconciliation,
19 that is, that God was in Christ reconciling the world to Himself, not imputing their trespasses to them, and has committed to us the word of reconciliation.
(NKJ)
John 17:5-7
5 "And now, O Father, glorify Me together with Yourself, with the glory which I had with You before the world was.
6 "I have manifested Your name to the men whom You have given Me out of the world. They were Yours, You gave them to Me, and they have kept Your word.
7 "Now they have known that all things which You have given Me are from You.
(NKJ)
John 14:10-11
10 "Do you not believe that I am in the Father, and the Father in Me? The words that I speak to you I do not speak on My own authority; but the Father who dwells in Me does the works.
11 "Believe Me that I am in the Father and the Father in Me, or else believe Me for the sake of the works themselves.
(NKJ)
Mark 15:34
34 And at the ninth hour Jesus cried out with a loud voice, saying, "Eloi, Eloi, lama sabachthani?" which is translated, "My God, My God, why have You forsaken Me?"
(NKJ)