You do not add anything to the works of Christ,but it is being led of the Spirit that causes you to be saved.
Paul said he could have all faith so that he could remove mountains,but if he did not have charity,love in action by the Spirit,then he is nothing.
Paul said if they do not have charity then they erred from the faith,and James said their faith is dead,and John said the love of God does not dwell in them,so do not love in word only,but in deed and in truth.
Charity is greater than faith,and faith works through love,and it is love alone,not faith alone,and everything stems from love.
Paul said charity does not think an evil thought,and does not sin by the Spirit,and is not selfish,and not arrogant,and does not act unseemly,and is kind,and only goes by their needs,and not their wants,and helps others with their needs if possible.
If a person violates what is the definition of charity,love in action,then they are not allowing the Spirit to lead them,and then their faith does not count,for charity is greater than faith.
And there are millions of people that violate charity by them going by their wants,and lusts,above their needs,and like that on a daily basis not wanting to give it up,and many believing that it is alright,and many saying sin does not affect their relationship with God,and holding unto sin.
But then they lack charity,then their faith will lack.
It is not adding unto the works of Christ,it is allowing the Spirit to lead you,which many lack by their lifestyle,and many thinking they are alright,hence the warnings in the Bible to not conduct yourself in that manner.
Charity is greater than faith,and charity is works of love by the Spirit.
They say faith alone,not saved by works,and then you observe their lifestyle and charity is not there like it should be as they cater to the flesh somewhat.
Gal 5:16 This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh.
Gal 5:22 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
Gal 5:23 Meekness, temperance: against such there is no law.
Gal 5:24 And they that are Christ's have crucified the flesh with the affections and lusts.
Gal 5:25 If we live in the Spirit, let us also walk in the Spirit.
1Co 10:13 There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it.
2Ti 3:5 Having a form of godliness, but denying the power thereof: from such turn away.
2Ti 3:6 For of this sort are they which creep into houses, and lead captive silly women laden with sins, led away with divers lusts,
2Ti 3:7 Ever learning, and never able to come to the knowledge of the truth.
Heb 10:26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
Heb 10:27 But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.
There is no struggling with sin,but people want to sin,and enjoy sin,and will not submit to the Spirit.
It is not adding to the works of Christ,but allowing the Spirit to lead you,and have charity,works of love,like abstaining from sin,and helping the poor and needy,for if not then your faith is dead,which many who claim Christ lack charity,and think they are alright with God,hence the warnings in the Bible to not conduct yourself in that manner of a lack of charity.
Are people going to say that doing the works of the Spirit,and having charity,love in action,and obeying the moral laws,and laws of love,is adding to the works of Christ,and not necessary for salvation,when it is not of the flesh,but of the Spirit.
The Spirit will not twist our arm to live for God,and we still have a choice between good and evil,so it is our responsibility to keep our self right with God by choosing to do what is right,and have charity,and allow the Spirit to lead us.