What promise did Jesus give them to remain in Him?
John 16: NASB
5“But now I am going to Him who sent Me; and none of you asks Me, ‘Where are You going?’
6“But because I have said these things to you, sorrow has filled your heart.
7“But I tell you the truth, it is to your advantage that I go away; for if I do not go away, the Helper will not come to you; but if I go, I will send Him to you.
8“And He, when He comes, will convict the world concerning sin and righteousness and judgment;
9concerning sin, because they do not believe in Me;
10and concerning righteousness, because I go to the Father and you no longer see Me;
11and concerning judgment, because the ruler of this world has been judged.