When his father died, he was sent home where he partly faked tuberculosis (the diagnosis was uncertain) and was hospitalized in Louny.

He escaped, and, suffering from tuberculosis, was hospitalized in Sarajevo and from there transported to Louny (Jiří Wolker was inspired by his war tale and wrote a short story called Ilda about it).

[2] He wrote his first poems in a student almanac, and sketched an unpublished collection called Songs of a Tubercular Patient.

In 1923 he published his first book of poems together with his uncle Arnošt Ráž – Cesta k lidem (Voyage to the People; the foreword was written by Zdeněk Kalista).

The voyage inspired Biebl to write a well-known collection of poems and several short stories, and he returned to the topic in most of his following works.

When seven communist poets (Jaroslav Seifert, Josef Hora, Ivan Olbracht, Stanislav Kostka Neumann and others) stood against the new Communist leader Klement Gottwald and left the party, Biebl was in the pro-Moscow group of poets with Julius Fučík, Vítězslav Nezval, František Halas and Karel Teige.

His best man was Karel Teige; among the wedding guests were Jiří Voskovec, Jaroslav Ježek, Vítězslav Nezval, Adolf Hoffmeister and others.

He was excited by the upcoming times of social justice which he saw in the communist government after February 1948, when he celebrated his 50th birthday.

Vítězslav Nezval wrote an excusatory poem Kosťo, proč nezdvihs aspoň telefon?