The Apostle James says people deceive themselves if they do not the things the Lord commands:
"Be ye doers of the word, and not hearers only, deceiving your own selves." (James 1: 22).
"What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him? If a brother or sister be naked, and destitute of daily food, and one of you say unto them, Depart in peace, be ye warmed and filled; notwithstanding ye give them not those things which are needful to the body; what doth it profit?" (James 2: 14, 15, 16).
The Apostle John gives this testimony concerning those who obey the Lord:
"Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city." (Revelation 22: 14).
ARE NOT MANKIND CLEANSED FROM SIN BY THE BLOOD OF JESUS?
Yes, if they follow Him, that is, keep His commandments.
"This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all. If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth: but if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin." (I John 1: 5, 6, 7).
DOES THE OBEDIENCE WHICH THE LORD REQUIRES MEAN BELIEF ONLY?
No; for true belief, or faith, cannot be separated from works. Jesus says,
"He that believeth on me, the works that I do shall he do also." (John 14: 12).
"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." (Matthew 7: 21).
"And why call ye me, Lord, Lord, and do not the things which I say?" (Luke 6: 46).
"Ye are my friends, if ye do whatsoever I command you." (John 15: 14).