And it came to pass, when Israel was strong,.... All the tribes of Israel were become numerous, and able to drive the Canaanites out of the land everywhere, and particularly were able to assist Manasseh in expelling the Canaanites out of the above places, yet they did not; but all they did was:

that they put the Canaanites to tribute, and did not utterly drive them out; which flowed from covetousness, and a love of ease; they did not care to be at the trouble of expelling them, as they found it turned more to their account and present advantage to make them tributaries; and this was true of the Israelites in general, and of the half tribe of Manasseh in particular; which, as Abarbinel thinks, is here respected.

As the Israelites grew strong, they made serfs of the Canaanites (see at Genesis 49:15). When this took place is not stated; but at all events, it was only done gradually in the course of the epoch of the judges, and not for the first time during the reign of Solomon, as Bertheau supposes on the ground of 1 Kings 9:20-22 and 1 Kings 4:12, without considering that even in the time of David the Israelites had already attained the highest power they ever possessed, and that there is nothing at variance with this in 1 Kings 4:12 and 1 Kings 9:20-22. For it by no means follows, from the appointment of a prefect by Solomon over the districts of Taanach, Megiddo, and Bethshean (1 Kings 4:12), that these districts had only been conquered by Solomon a short time before, when we bear in mind that Solomon appointed twelve such prefects over all Israel, to remit in regular order the national payments that were required for the maintenance of the regal court. Nor does it follow, that because Solomon employed the descendants of the Canaanites who were left in the land as tributary labourers in the erection of his great buildings, therefore he was the first who succeeded in compelling those Canaanites who were not exterminated when the land was conquered by Joshua, to pay tribute to the different tribes of Israel.

And it came to pass, when Israel was strong, that they put the Canaanites to tribute, and did not utterly drive them out.

1:21-36 The people of Israel were very careless of their duty and interest. Owing to slothfulness and cowardice, they would not be at the pains to complete their conquests. It was also owing to their covetousness: they were willing to let the Canaanites live among them, that they might make advantage of them. They had not the dread and detestation of idolatry they ought to have had. The same unbelief that kept their fathers forty years out of Canaan, kept them now out of the full possession of it. Distrust of the power and promise of God deprived them of advantages, and brought them into troubles. Thus many a believer who begins well is hindered. His graces languish, his lusts revive, Satan plies him with suitable temptations, the world recovers its hold; he brings guilt into his conscience, anguish into his heart, discredit on his character, and reproach on the gospel. Though he may have sharp rebukes, and be so recovered that he does not perish, yet he will have deeply to lament his folly through his remaining days; and upon his dying bed to mourn over the opportunities of glorifying God and serving the church he has lost. We can have no fellowship with the enemies of God within us or around us, but to our hurt; therefore our only wisdom is to maintain unceasing war against them.