put feet to one's belief/faith 是什么意思

put feet to one's belief/faith 是什么意思
And they admire someone who puts feet to their beliefs, who is authentic, who is real, who is not just spinning things for a political benefit.
这个是一位评论员 针对Sarah·Palin 提出的公众意见。 希望大家给出解释后，能再举一个例子。非常感谢各位。