We present a simple technique for stabilization of a laser frequency off resonance using the Faraday effect in a heated vapor cell with an applied magnetic field. In particular, we demonstrate stabilization of a $780\mathrm{nm}$ laser detuned up to $14\mathrm{GHz}$ from the ${}^{85}\mathrm{Rb}$ ${\mathit{D}}_2$ $5^2{\mathit{S}}_{1/2}$ $F=2$ to $5^2{\mathit{P}}_{3/2}$ $F^{\prime }=3$ transition. Control of the temperature of the vapor cell and the magnitude of the applied magnetic field allows locking $\sim 6–14\mathrm{GHz}$ red and blue detuned from the atomic line. We obtain an rms fluctuation of $7\mathrm{MHz}$ over $1\mathrm{h}$ without stabilization of the cell temperature or magnetic field.