We know that we know Him 1 John 2:3

…we know that we are in Him 1 John 2:5

…you have an anointing from the Holy One, and you know all things. 1 John 2:20

…you know the Truth and that no lie is of the Truth. 1 John 2:21

…you know that He is righteous…you know that everyone who practices righteousness is born of Him.  1 John 2:29

…we know that when He is revealed, we shall be like Him 1 John 3:2

…you know that He was manifested to take away our sins 1 John 3:5

We know that we have passed from death to life 1 John 3:14

…we know love 1 John 3:16

…we know that we are of the Truth 1 John 3:19

…we know that He abides in us 1 John 3:24

…you know the Spirit of God 1 John 4:2

…we know the spirit of Truth and the spirit of error 1 John 4:6

…we know that we abide in Him, and He in us 1 John 4:13

…we have known and believed the love that God has for us 1 John 4:16

…we know that we love the children of God 1 John 5:2

These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life,.. 1 John 5:13 

…we know that He hears us… 1 John 5:15a

…we know that we have the petitions that we have asked of Him. 1 John 5:15b

We know that whoever is born of God does not sin 1 John 5:18

We know that we are of God, and the whole world lies under the sway of the wicked one. 1 John 5:19

…we know that the Son of God has come and has given us an understanding, 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. 1 John 5:20