Sure it is, Jesus tells us it is in John 6:28,29 among other verses
John 6:28,29
Then said they unto him,
What shall we do, that we might work the works of God?
Jesus answered and said unto them,
This is the work of God, that ye believe on him whom he hath sent.
1 Thessalonians 1:3
Remembering without ceasing your work of faith, and labour of love, and patience of hope in our Lord Jesus Christ, in the sight of God and our Father
Ephesians 2:10
For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.
Matthew 7:16-21
Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?
Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.
A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.
Every tree that bringeth not forth good fruit is hewn down, and cast into the fire.
Wherefore by their fruits ye shall know them.
Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
John 15:2
Every branch in me that beareth not fruit he taketh away: and every branch that beareth fruit, he purgeth it, that it may bring forth more fruit.
2 Corinthians 5:10
For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad.
Romans 2:6-11
Who will render to every man according to his deeds:
To them who by patient continuance in well doing seek for glory and honour and immortality, eternal life:
But unto them that are contentious, and do not obey the truth, but obey unrighteousness, indignation and wrath,
Tribulation and anguish, upon every soul of man that doeth evil, of the Jew first, and also of the Gentile;
But glory, honour, and peace, to every man that worketh good, to the Jew first, and also to the Gentile:
For there is no respect of persons with God.
1 Peter 1:14-17
As obedient children, not fashioning yourselves according to the former lusts in your ignorance:
But as he which hath called you is holy, so be ye holy in all manner of conversation;
Because it is written, Be ye holy; for I am holy.
And if ye call on the Father, who without respect of persons judgeth according to every man's work, pass the time of your sojourning here in fear:
Psalms 62:12
Also unto thee, O Lord, belongeth mercy: for thou give to every man according to his work.
James 2:17
Even so faith, if it hath not works, is dead, being alone.
James 2:20
But wilt thou know, O vain man, that faith without works is dead?
James 2:24
Ye see then how that by works a man is justified, and not by faith only.
James 1:21,22
Wherefore lay apart all filthiness and superfluity of naughtiness (walking after the flesh – see Gal 6:7,8), and receive with meekness the engrafted word, which is able to save your souls.
But be ye doers of the word, and not hearers only, deceiving your own selves.