It has become popular to spiritualize the keys of the ministration of Angels into being nothing more than home teaching visits. But while teaching that we can serve as ministers to each other certainly has its place, the intention of that teaching can't possibly be to put scriptures like these out of our hearts, nor to deny the plain meaning of D&C 13.
Moroni 7:27 Wherefore, my beloved brethren, have miracles ceased because Christ hath ascended into heaven, and hath sat down on the right hand of God, to claim of the Father his rights of mercy which he hath upon the children of men?
28 For he hath answered the ends of the law, and he claimeth all those who have faith in him; and they who have faith in him will cleave unto every good thing; wherefore he advocateth the cause of the children of men; and he dwelleth eternally in the heavens.
29 And because he hath done this, my beloved brethren, have miracles ceased? Behold I say unto you, Nay; neither have angels ceased to minister unto the children of men.
30 For behold, they are subject unto him, to minister according to the word of his command, showing themselves unto them of strong faith and a firm mind in every form of godliness.