It's THE requirement. Scripture demonstrates that faith alone does not save us.
Matt 25:31-46 "When the Son of Man comes in His glory, and all the holy angels with Him, then He will sit on the throne of His glory. "All the nations will be gathered before Him, and He will separate them one from another, as a shepherd divides [his] sheep from the goats. "And He will set the sheep on His right hand, but the goats on the left. "Then the King will say to those on His right hand, 'Come, you blessed of My Father, inherit the kingdom prepared for you from the foundation of the world: 'for I was hungry and you gave Me food; I was thirsty and you gave Me drink; I was a stranger and you took Me in; 'I [was] naked and you clothed Me; I was sick and you visited Me; I was in prison and you came to Me.' "Then the righteous will answer Him, saying, 'Lord, when did we see You hungry and feed [You,] or thirsty and give [You] drink? 'When did we see You a stranger and take [You] in, or naked and clothe [You?] 'Or when did we see You sick, or in prison, and come to You?' "And the King will answer and say to them, 'Assuredly, I say to you, inasmuch as you did [it] to one of the least of these My brethren, you did [it] to Me.' "Then He will also say to those on the left hand, 'Depart from Me, you cursed, into the everlasting fire prepared for the devil and his angels: 'for I was hungry and you gave Me no food; I was thirsty and you gave Me no drink; 'I was a stranger and you did not take Me in, naked and you did not clothe Me, sick and in prison and you did not visit Me.' "Then they also will answer Him, saying, 'Lord, when did we see You hungry or thirsty or a stranger or naked or sick or in prison, and did not minister to You?' "Then He will answer them, saying, 'Assuredly, I say to you, inasmuch as you did not do [it] to one of the least of these, you did not do [it] to Me.' "And these will go away into everlasting punishment, but the righteous into eternal life." James 1:22-27 But be doers of the word, and not hearers only, deceiving yourselves. For if anyone is a hearer of the word and not a doer, he is like a man observing his natural face in a mirror; for he observes himself, goes away, and immediately forgets what kind of man he was. But he who looks into the perfect law of liberty and continues [in it,] and is not a forgetful hearer but a doer of the work, this one will be blessed in what he does. If anyone among you thinks he is religious, and does not bridle his tongue but deceives his own heart, this one's religion [is] useless. Pure and undefiled religion before God and the Father is this: to visit orphans and widows in their trouble, [and] to keep oneself unspotted from the world.