Todd Friel and John MacArthur discuss the Duck Dynasty's cast's connection with the so-called church of Christ, which teaches that water baptism saves and that one must keep up his salvation by works.
In addition to the comments in this video, the connection of the Duck Dynasty members to the theology of the so-called "church of Christ" seems pretty clear on the website of the church that Phil Robertson is an elder. Its page titled "what we believe" states:
WE BELIEVE the Holy Spirit co-exist with God the Father and God the Son. The Holy Spirit is a gift given to physically indwell Christians when they are baptized. He is a deposit from God the Father guaranteeing Jesus’ return. His role in our life is to help and guide us in sanctification (holiness).
Beware of Ted R. Weiland (this refutes the overall hermeneutic)
Baptismal Regeneration: A False Gospel
Nowhere does the Bible teach that Water Baptism Saves (this I wrote a while ago, so there may be some arguments I would now frame differently, or more precisely; but it still shows well enough the futility of interpreting any Scripture to mean that water baptism saves)
 White's Ferry Road Church, "What We Believe." Retrieved March 22, 2014 from http://wfrchurch.org/what-we-believe.htm.
Willie Robertson in 2013 (cropped from original)
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