Many Christian Churches teach that salvation is by faith alone. They often quote from the writings of Paul, who wrote in Ephesians 2:8–9:
For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast.
It is true that Jesus said in John 3:16:
For God so loved the world, as to give his only begotten Son; that whosoever believeth in him, may not perish, but may have life everlasting.
But it is also true that Jesus said in Matthew 7:21:
Not every one that saith to me, Lord, Lord, shall enter into the kingdom of heaven: but he that doth the will of my Father who is in heaven, shall enter into the kingdom of heaven.
The question then is, what is the will of the Father?
God told His people in Isaiah 1:16–17:
Wash yourselves, be clean, take away the evil of your devices from my eyes, cease to do perversely. Learn to do well: seek judgment, relieve the oppressed, judge for the fatherless, defend the widow.
In my opinion, those who do the will of the Father are people who not only believe in Jesus but also keep His commandments: love God above all and love your neighbour as yourself.
Jesus is Our Saviour. We should listen to Him.