Vectors - Distance from a Point to a Line

The line \({{l}_{3}}\) passes through \(B(3,-4,4)\) and is parallel to \({{l}_{1}}:\mathbf{r}=\left( \begin{matrix}  1  \\ -5  \\   2  \end{matrix} \right)+\lambda \left( \begin{matrix}14  \\ -2  \\5  \end{matrix} \right);\lambda \in \mathbb{R}\).

Find the perpendicular distance between \({{l}_{1}}\) and \({{l}_{3}}\).