He did not weaken in faith when he considered his own body, which was as good as dead (since he was about a hundred years old), or when he considered the barrenness of Sarah's womb.

For I do not understand my own actions. For I do not do what I want, but I do the very thing I hate.

For God has done what the law, weakened by the flesh, could not do. By sending his own Son in the likeness of sinful flesh and for sin, he condemned sin in the flesh,

He who did not spare his own Son but gave him up for us all, how will he not also with him graciously give us all things?

For, being ignorant of the righteousness of God, and seeking to establish their own, they did not submit to God's righteousness.

For if you were cut from what is by nature a wild olive tree, and grafted, contrary to nature, into a cultivated olive tree, how much more will these, the natural branches, be grafted back into their own olive tree.

The Mystery of Israel's Salvation

Lest you be wise in your own sight, I do not want you to be unaware of this mystery, brothers: a partial hardening has come upon Israel, until the fullness of the Gentiles has come in.

Live in harmony with one another. Do not be haughty, but associate with the lowly. Never be wise in your own sight.

Who are you to pass judgment on the servant of another? It is before his own master that he stands or falls. And he will be upheld, for the Lord is able to make him stand.

One person esteems one day as better than another, while another esteems all days alike. Each one should be fully convinced in his own mind.

For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naive.