HRM completely twist Colossians 2:16 in order to proof their doctrine. If we are confused about a text or Bible verse, we should read 20 verses before and 20 verses after in order to read in context (20/20). If we are still confused, then we read the chapter before and the chapter after. In a video of a popular HRM ministry interpreting Col. 2:16 they jump back to verse 8 alone to explain vs.16, skipping the real context, unfortunately some people will accept it without checking. But there is not any proof that Gnostics were pressing Christians not to keep the Mosaic law, as HRM teaches.
Gnostics mainly attacked the Divinity of Jesus Christ & they still do today. Many founders of gnostic schools were identified as Jewish Christians by early Church Fathers. Gnostics of today that are involved in Judaism & Kabbalah still keep the Sabbath & the dietary laws, feast, etc, this is not against their teachings & it never was. Some scholars, including some Jewish scholars have postulated that there was originally a Jewish gnosticism, which influenced the early origins of gnosticism & that it was known by ‘Talmudic’ Rabbis. Also the Jewish Encyclopedia states: “There is no doubt that a Jewish gnosticism existed before a Christian or a Judeo-Christian gnosticism“