New International Version (NIV)
20We know also that the Son of God has come and has given us understanding, so that we may know him who is true. And we are in him who is true by being in his Son Jesus Christ. He is the true God and eternal life.
1 John 5:20
1 John 5:20 in 6 English translations. Each links through to the full chapter for context.
New American Standard Bible - NASB (NASB2020)
20And we know that the Son of God has come, and has given us understanding so that we may know Him who is true; and we are in Him who is true, in His Son Jesus Christ. This is the true God and eternal life.
New American Standard Bible - NASB 1995 (NASB1995)
20And we know that the Son of God has come, and has given us understanding so that we may know Him who is true; and we are in Him who is true, in His Son Jesus Christ. This is the true God and eternal life.
Amplified Bible (AMP)
20And we [have seen and] know [by personal experience] that the Son of God has [actually] come [to this world], and has given us understanding and insight so that we may [progressively and personally] know Him who is true; and we are in Him who is true—in His Son Jesus Christ. This is the true God and eternal life.
Berean Standard Bible (BSB)
20And we know that the Son of God has come and has given us understanding, so that we may know Him who is true; and we are in Him who is true — in His Son Jesus Christ. He is the true God and eternal life.
New International Reader’s Version (NIrV)
20We also know that the Son of God has come. He has given us understanding. So we can know the God who is true. And we belong to the true God by belonging to his Son, Jesus Christ. He is the true God and eternal life.