Rhetorical: Alma now asks his congregation to personalize their covenant. It might be possible to say that they believe in the Atoning Messiah (here simply called "the Lord"), because they belong to the church. That is not a sufficient level of commitment for Alma. Alma wants a personal renewal of the covenant, and so he very specifically asks if the individual is able to see themselves in a position where they would be accepted of the Lord.
Alma specifically mentions "works." In the context of Alma's discourse, it would be a mistake to read this as a modern polemic against salvation by grace. Alma isn't discussing the Grace of the Lord, he is directing his comments to the actions of his people. In the context of the times Alma is combating a severe social division that is based on religious principles. It is in that context that Alma needs to emphasize that the actions of the congregation should be in harmony with the principles of the gospels. If they are not, the social problems would be immediately exacerbated.
Remember that in Alma 1 we saw that the persecution of the members of the church had lead to some un-Christian retaliation:
Alma 1:22
22 Nevertheless, there were many among them who began to be proud, and began to contend warmly with their adversaries, even unto blows; yea, they would smite one another with their fists.
It is this type of response that cannot continue, and thus the emphasis on the personal works of righteousness emphasizes to the congregation their responsibility to follow the code of the Savior, to react to their situation in appropriate ways.