One of the most interesting and indeed essential observations from these tribal and ancestry lists is the organic and symbiotic nature of the Israelite community. Every person in every tribe has his or her responsibility for the community as a whole. If certain persons are not guarding the various gates of the city, then marauders and bandits can easily attack. If certain persons are not playing instruments or singing, then the community is without leadership in corporate worship and praise of the Lord and His many benevolent and redemptive acts toward Israel. In the following sections, the specific lists of persons indicate roles both in the worship ethic and in the military life of Israel.