Thus I presume you accept the doctrine of descent with modification from common ancestors; and we shall argue as to the mechanism of speciation (design, or random variation with natural selection). I would argue that the mutations are essentially random in nature: in the mid 20th century Fisher, Wright and Haldane worked out the mathematics and statistics of mutations and population genetics. Now we know the actual biochemical mechanisms of mutations. And they do happen at random. (Of course, selection tends to remove deleterious mutations, and favors beneficial ones; but most mutations are neutral.)
My own belief is that God created life; he intended for us to be here. And you may be right -- who can tell whether a random mutation was intended by God. But I believe God mainly did allow random mutations to create life. That is, he created a system of life that creates itself. Perhaps that is a more elegant and beautiful arrangement than for God to have simply created by fiat the various forms of life. It certainly is an arrangement more consistent with the scientific evidence.
Well said!