1 John 1:3

We proclaim to you what we have seen and heard, so that you also may have fellowship with us. And this fellowship of ours is with the Father and with His Son, Jesus Christ.
BSB · Berean Standard Bible
That which we have seen and heard declare we unto you, that ye also may have fellowship with us: and truly our fellowship is with the Father, and with his Son Jesus Christ.
KJV · King James Version
that which we have seen and heard we declare to you, that you also may have fellowship with us. Yes, and our fellowship is with the Father and with his Son, Jesus Christ.

Note “Christ” means “Anointed One”.

WEB · World English Bible
that which we have seen and heard declare we unto you also, that ye also may have fellowship with us: yea, and our fellowship is with the Father, and with his Son Jesus Christ:
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

which
1 John 1:1; Acts 4:20
declare
1 John 1:5; Psalm 2:7; Psalm 22:22; Isaiah 66:19; John 17:25; Acts 13:32, 41; Acts 20:27; 1 Corinthians 15:1; Hebrews 2:12
ye also
Acts 2:42; Romans 15:27; Ephesians 3:6; Philippians 1:7; Philippians 2:1; 1 Timothy 6:2; Hebrews 3:1; 1 Peter 5:1
our fellowship
1 John 1:7; 1 John 2:23, 24; John 14:20–23; John 17:3, 11, 21; 1 Corinthians 1:9, 30; 2 Corinthians 13:14; Philippians 2:1; Philippians 3:10; Hebrews 3:14
with his
1 John 5:10, 11; Colossians 1:13; 1 Thessalonians 1:10