In today's Gospel reading from John 15, Jesus talks about the vine and the branches. He said to his disciples, "I am the vine, you are the branches. Whoever remains in me and I in him bear much fruit, because without me you can do nothing. Anyone who does not remain in me will be thrown out like a branch and wither; people will gather them and throw them into a fire and they will be burned." Matthew 12.21 comes to my mind, in which Jesus says "Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of heaven." Those who do not remain firmly in the Lord can easily be targeted by Satan. I have seen this happening time and again. My personal recommendation is to achieve union with God so that you and the Lord might remain in each other firmly.