Matthew Henry Commentary Numbers 10:29-32

"And Moses said unto Hobab, the son of Reuel the Midianite, Moses` father-in-law, We are journeying unto the place of which Jehovah said, I will give it you: come thou with us, and we will do thee good; for Jehovah hath spoken good concerning Israel. And he said unto him, I will not go; but I will depart to mine own land, and to my kindred. And he said, Leave us not, I pray thee; forasmuch as thou knowest how we are to encamp in the wilderness, and thou shalt be to us instead of eyes. And it shall be, if thou go with us, yea, it shall be, that what good soever Jehovah shall do unto us, the same will we do unto thee." — Numbers 10:29-32 (ASV)

Moses invites his relatives to go to Canaan. Those who are bound for the heavenly Canaan should ask and encourage their friends to go with them: we will have no less of the joys of heaven because others come to share with us. It is good to have fellowship with those who have fellowship with God.

But the things of this world, which are seen, strongly pull us away from pursuing the things of the other world, which are not seen.

Moses urges that Hobab could be helpful to them. Not to show where they must encamp, nor which way they must march (the cloud was to direct that); but to show the advantages of the places they marched through and encamped in. It is quite consistent with our trust in God's providence to use the help of our friends.