IV. Joshua's circumstances when he gave them this charge: He was old and stricken in age (v. 1), probably it was in the last year of his life, and he lived to be 110 years old, ch. xxiv. 29. And he himself takes notice of it, in the first words of his discourse, v. 2. When he began to be old, some years ago, God reminded him of it (ch. xiii. 1): Thou art old. But now he did himself feel so much of the decays of age that he needed not to be told of it, he readily speaks of it himself: I am old and stricken in age. He uses it, 1. As an argument with himself to give them this charge, because being old he could expect to be but a little while with them, to advise and instruct them, and therefore (as Peter speaks, 2 Pet. i. 13) as long as he is in this tabernacle he will take all opportunities to put them in remembrance of their duty, knowing by the increasing infirmities of age that he must shortly put off this tabernacle, and desiring that after his decease they might continue as good as they were now. When we see death hastening towards us, this should quicken us to do the work of life with all our might. 2. As an argument with them to give heed to what he said. He was old and experienced, and therefore to be the more regarded, for days should speak; he had grown old in their service, and had spent himself for their good, and therefore was to be the more regarded by them. He was old and dying; they would not have him long to preach to them; therefore let them observe what he said now, and lay it up in store for the time to come.