Okay but what did Jesus say? If we don't do God's will, will we still go to heaven?
Matthew 7:21
21 “Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven.
Can we bear no fruit and go to heaven?
John 15:1-2
I am the true vine, and My Father is the vinedresser. 2 Every branch in Me that does not bear fruit He takes away; and every branch that bears fruit He prunes, that it may bear more fruit.
What does Jesus mean by "take away"?
John 15:5-6
5 “I am the vine, you are the branches. He who abides in Me, and I in him, bears much fruit; for without Me you can do nothing. 6 If anyone does not abide in Me, he is cast out as a branch and is withered; and they gather them and throw them into the fire, and they are burned.
It's not enough to mentally acknowledge Jesus. We have to obey Him. We have to love one another. We have to crucify our flesh with its passions and desires.