请教一下懂法律的，这句话怎么翻译？多谢了。

This action was for foreclosure on a charge executed by respondents at the behest of one Johnson in connection with his acquisition of an associate's interst in a firm. The charge was, in fact, a collateral security securing the performance of the covenantors under a Deed of Covenants and it was relied upon by the appellant in releasing one Suwald from his obligations under a chattel mortgage given by him and Johnson at the time of the purchase of the firm from appellant.