In a similar way John Wesley reflects in his journal:
Sunday 29 January 1738"Are they read in philosophy? So was I. In ancient or modern tongues? So was I also. Are they versed in your science of divinity? I too have studied it many years. Can they talk fluently upon spiritual things? The very same could I do. Are they plenteous in alms? Behold, I gave all my goods to feed the poor. Do they give of their labour as well as of their substance? I have laboured more abundantly than they all. Are they willing to suffer for their brethren? I have thrown up my friends, reputation, ease, country; I have put my life in my hand, wandering into strange lands; I have given my body to be devoured by the deep, parched up with heat, consumed by toil and weariness, or whatever God should please to bring upon me. But does all this - be it more or less, it matters not - make me acceptable to God? Does all I ever did or can know, say, give, do, or suffer, justify me in his sight? Yea, or the constant use of all the means of grace? .... Does all this give me a claim to the holy, heavenly, divine character of a Christian? By no means. "
We should do what we can, but we must not claim that we can do it on our own.